answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
trasher
1 month ago
5

Carlos and Maria drove a total of 233 miles in 4.4 hours. Carlos drove the first part of the trip and averaged 55 miles per hour

. Maria drove the remainder of the trip and averaged 50 miles per hour. For approximately how many hours did Maria drive? Round your answer to the nearest tenth if necessary.
Mathematics
2 answers:
babunello [11.8K]1 month ago
7 0
Maria drove for 1.8 hours. To explain: Let a represent Carlos's driving time and b for Maria's. They together traveled 233 miles in a total of 4.4 hours. The equations we constructed indicated that a + b = 4.4. Given their speeds, we use another equation, 55a + 50b = 233. After substituting to solve, the results show that Maria's driving time equated to 1.8 hours.
tester [12.3K]1 month ago
3 0
Assign x as the hours Carlos drove and y as the hours Maria drove. The first equation is x + y = 4.4, from which we derive x = 4.4 - y. The second equation, representing their distances, is 55x + 50y = 233. Substituting the first equation into the second gives us 55(4.4 - y) + 50y = 233, resulting in a distance traveled of 3.5 m by Carlos in 2.6 hours.
You might be interested in
Find the distance between the points L(7,−1) and M(−2, 4).
Leona [12618]
The precise distance between the two points is calculated to be 10.
8 0
2 months ago
A small-appliance manufacturer finds that the profit P (in dollars) generated by producing x microwave ovens per week is given b
PIT_PIT [12445]

Answer:

The amount of ovens that must be produced in a week to earn a $1610 profit is 70.

Step-by-step explanation:

Given:

A small-appliance manufacturer determines the profit P (in dollars) from producing x microwave ovens weekly by the formula:

P=\frac{1}{10}x(300-x)

with 0 ≤ x ≤ 200.

The target profit is $1610

So, set P = 1610, then solve for x:

1610=\frac{1}{10}x(300-x)

Multiply both sides by 10:

1610\cdot \:10=\frac{1}{10}x\left(300-x\right)\cdot \:10

16100=x\left(300-x\right)

16100=300x-x^2

-x^2+300x-16100=0

Next, factor the quadratic:

(x-70)(x-230)=0

Solving for x gives:

x=70,x=230

Since x=230 is outside the domain 0 ≤ x ≤ 200, we discard it.

Hence, the valid solution is x=70.

Therefore, to achieve a $1610 profit, the manufacturer must produce 70 ovens weekly.


7 0
3 months ago
In a test of a printed circuit board using a random test pattern, an array of 16 bits is equally likely to be 0 or 1. Assume the
AnnZ [12381]

Answer:

A), B), and C) are clarified below.

Step-by-step explanation:

The inquiry involves using binary digits, employing probabilities that are equal for both conditions, by applying a random test pattern, where the formula is derived from p = q.

Simplifying gives us

P[k] = nCk / 2^n

A. Probability of all bits being 1s

16c16/2^16 = 1/65536

B. Probability of all bits being 0s

16c0/2^16 = 1/65536

C. The probability of having exactly 8 bits as 1s and the other 8 as 0s

16c8/2^16 = 12870/65536 => 0.1963 ≈ 19.63%

8 0
2 months ago
If 6 components are drawn at random from the container, the probability that at least 4 are not defective is . If 8 components a
Svet_ta [12734]
The question is missing some information. It should be phrased as follows:

<span><span>A container has 50 electronic components, with 10 identified as defective. If 6 components are randomly selected from the container, what is the probability that at least 4 of them are not defective? Additionally, if 8 components are drawn at random from the container, what is the probability that exactly 3 are defective?

</span>Answers
<span>Part 1.  0.02
Part 2. </span></span>0.0375<span><span>

</span>Explanation
Probability denotes the likelihood of an event occurring. It is computed as:
probability = (Number of favorable outcomes)/(Number of total outcomes)

Part 1
When 6 components are chosen, if 4 are confirmed functioning, then 2 must be defective.
P(at least 4 functional) = 4/40</span>× 2/10
                                            = 1/10 × 1/5
                                            = 1/50
                                            = 0.02

Part 2
Choosing 8 components, if 3 are defective, then 5 are functioning.
P(3 defective) = 3/40 × 5/10
                             = 15/400
                             = 3/80
                            = 0.0375
4 0
2 months ago
Other questions:
  • If dy/dt=-10e^-t/2 and y(0)=20 what is the value of y(6)​
    11·1 answer
  • Two functions are given below: f(x) and h(x). State the axis of symmetry for each function and explain how to find it. f(x) h(x)
    10·1 answer
  • Can you answer this plzz and the pic that goes with it???????? Thx soo much!!!!!
    7·2 answers
  • uncle sammy invests money on stocks and makes 7 to 13 percent of the invested money. Calculate the range of money sammy will mak
    8·1 answer
  • 11. There are eleven seniors and five juniors who are sprinters on the high school track team. The coach must select four sprint
    9·1 answer
  • A debt of $450 is to be shared equally among the members of the Outing Club. When five of the members refuse to pay, the other m
    15·1 answer
  • Given CS=2x+1, SB=6x, CR=7.5, and RA=18. What must the value of x be in order to prove SR || BA? Justify your answer
    8·1 answer
  • Trevon made 24of the 40 free throws he attempted last season. What percent of his attempted free throws did Trevon make?
    13·1 answer
  • Given that a function, g, has a domain of -1 ≤ x ≤ 4 and a range of 0 ≤ g(x) ≤ 18 and that g(-1) = 2 and g(2) = 8, select the st
    12·1 answer
  • The ratio of newspapers to magazines at the corner store is 9 to 5. Which combination of newpapers and magazines could the corne
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!